Single air line operated sediment sampler



Aug. 15, 1950 A. M. LANG 2,519,056

SINGLE AIR LINE OPERATED SEDIMENT SAMPLER Fild April 18, 1947 2 sheets-sheet 1 Ww A l/ l :IL'NVEAn-ore,

Z Haan M. LANG, 72- BYMQ j' I IT'ToRNEr Aug, 15, 195ov A, M, LANG 2,519,056

SINGLE. AIR um; OPERATED SEDIMENT SAMPLER Filed April 18, 1947 f 2 sheets-sheet 2 INVENTOR,

` above' the nut.

opening from the rear side of the head. These. rearwardly extending passageways 36 and 31' leave the bore 32 at the same elevationrespecjtively as those of the passageways 30 and .135,A

Fig. '1.

J th'e{ chamberl:63: and thereby reduceethe pressure inthe passageway 59.

within the bore 3l is snfdingiycarrid agis-- "if i I tin? `ASSXIILI'BT of smaller diameter than that ton type valve 38 toV be normally "urged tofan uppermost position by means of a compression spring 39 bearing between that valve 38and5'th lower end of the bore 3|, that end `being-.herein shown as a plu-g 4D, and the spring 39 being" shown as entering within a counterbore in the lower end of the valve 38. A nut 4I isscrewthreadedly entered in the upper end of the bore 3l to havefthe v'stem' 42 'of the valve 38 slidingly passed through that nut and carrying an operating button 43l limitthe upper travel' of the valve: Thisvalve 38 is provided with an intermediate reduced diam- 'eter portion 44 of a length-which will bridge the openings of the passageways 38 and 34 when the Fig.` 4. When the valve 38Y is in its uppermost, Ynormal position, Fig. 3,- the valve closes off atleast one of the passageways 3B- a-nd 34 herein shown `as closing off the passageway 34 so that there may beno flow of air from the inlet bore 28 through This nut 4I-serves as a stop to 4Valve 38 iS pushed :down to-its lowermost position,

between its lower end and the lower end of the i bore 32 herein shown as consisting of a plug 41. The spring 46 enters a counterbore 48 withinthe lower end of the valve 45 as a means of centering the spring. The stem 49 of the valve 45 slidingly I passes-through a retainingnut 50 which is screwthreadedly engaged in the top end of the bore 32 to limit the outward travel of the valve 45. When the 'valve 45 is in the uppermost position, Fig. 4, it closes 01T entrances into the passageways 30 and 35. and lower reduced diameter sections 5I and 52 respectively, the section 5I being spaced above :the passageway 38 and the section 52 being spaced The valve 45 isprovided withthe'upper f between the passageway 38 and the passageway i 35 when the valve 45 is in the upper position, Fig.-4. These sections 5I and 52 are Yso'spaced along the valve 45 that when the valve 45 is fully depressed, Fig. 3,-these sections 5| and 52 register respectively with the openings of the passage- Ways 38 and 35 and likewise registers,y Fig. 7', with the passageways 36 and 31. i

A handle 53 is shown as extending rearwardly from the body I5and as being a separate menber attached to the head I5 by means ofiscrews v54 and 55 passing through handle ears 56 and 51 into the body I 5. This handle 53 has therein two major passageways58 and 59.V The passageway 58, is in the form shown, interconnectsat-its 'if It is to be noted that the only outlet from the 'l rear of the handle 53 from the passageway 59 is .through the tube 60. In the head I 5, back of the Avalves 38 and 45 is mounted a stem 64 to be vertically reciprocable within a bore 65. A spring '66'norm'ally urges .the stem 64 to an upper posi- Yerend of the bore 65 and thus close it off. A passageway 68 leads laterally from the bore 65 to the orice 69 on the left hand side of the head I5. Thus the normal condition of the valve 68 is a closed one.

' Operation.

y 'In operating the device above o described, the handle 53 is gripped by the operator and the tube I6 isinserted within themilk can (not shown) to ,have the nipple I9 vapproach the bottom of the can. By the thumb ora linger of the hand gripping the handle 53,"the operator will then depressthe'vacuum valve 45,"-Fig. 3, whereupon air enteringthrough the nipple 29 will enter the valve bore 32 around the valve section 5I from'the passageway 38 and then ilow rearwardly through the passageway 36 into the handle passageway 58 and discharge through the tube 60 whereupon a partial'vacuum willbe created within the tube I6 by reason of rthe communicationv from'the passageway 59 through the head passageway 31 laround-the'valve section 52, the-passageway 35, and then passing through'the tube 2 I. When the milk has reached the predetermined level within the tube-I6which'level indicates a definite volume, the oat 24 will'liftto carry the ball 23 up `against the seat-22 to close off the tube and hence stop the inductionVf-the milk Yinto thetube I67 whereupon'theoperator will release the valve 45 to allow it to return to its normal position,Fig. 4. Then the operator will depress the valve 38 `tok allow' the air vpressure entering through the Vbore v28 and ilowing through the passageway 38 around the valve portion 44, into the passageway l34, and vdown Vthrough the vertical passageway 33 through the tube 2li to blow the milk'back out of the tube IB-through theffilter pad I 1. Thus 'by a single air hose connection, supplying the air to Vthe head I5 underv pressure, both pressure and vacuum may be producedlfor the expelling and intake'of the milkwithin the'sampling tube. By reason of the'presenc'e'- of "the 'iioat 24, no milk can at any time enterinto the passageways or body of'the'headV I5"or`of the handle 53 and thus there is no danger of contamination from thatfsource.. The stem 64 may be depressed at any time desirable to'restore the interior pressure or the tube I61to atmospheric pressure.

"Thusfit' is to be seen that'a very unique, compact and efliciently operating control A mechanism is provided by the' invention," and while I'have described the invention-in theV one Particular form, it is obvious that structural changes may be Yemployed without departing from'the spirit of'theinventionand`I therefore do not desire to be limited to that-precisefformbeyond the limitations which may be imposed by the following claims.

I claim:

1. A milk sampler control head comprising a body having a pair of spaced apart vertical bores both closed at their lower ends, a transverse passageway interconnecting said bores, a vertical passageway opening from the underside of the body, a second transverse passageway interconnecting one of said bores and said vertical passageway, a third transverse passageway interconnecting said other bore and said vertical passageway, and an air pressure inlet passage opening into said rst transverse passageway, a valve in said rst bore normally closing off in one position at least one of the openings into said rst and second passageways and in a second position interconnecting said rst and second passageways; a valve in said second bore at all times closing off direct communication through said bore between said rst and said third passageways and normally closing off said rst and third passageways; said head having a pressure and a vacuum passageway leading respectively from said second bore; a Venturi tube in said pressure passageway discharging to the atmosphere, and said Vacuum passageway opening into the throat of said tube; said second valve being formed, upon shifting from said normal position, to interconnect respectively said rst passageway and said pressure passageway and simultaneously said third passageway and said vacuum passageway.

2. A milk sampler control head comprising a body having a pair of spaced apart vertical bores both closed at their lower ends, a transverse passageway interconnecting said bores, a vertical passageway opening from the underside of the body, a second transverse passageway interconnecting one of said bores and said vertical passageway, a third transverse passageway interconnecting said other bore and said vertical passageway, and an air pressure inlet passage opening into said first transverse passageway, a valve in said rst bore normally closing off in one position at least one of said openings into said first and second passageways and in a second position interconnecting said iirst and second passageways; a valve in said second bore at all times closing off direct communication through said bore between said first and said third passageways and normally closing oi said rst and third passageways; said head having a pressure and a vacuum passageway leading respectively from said second bore; a Venturi tube in said pressure passageway discharging to the atmosphere, and said vacuum passagewayV opening into the throat of said tube; said second valve being formed, upon shifting from said normal position,

.to interconnect respectively said rst passageway the body, a second transverse passageway interconnecting one of said bores and said vertical passageway, a third transverse passageway interconnecting said other bore and said vertical passageway, and an air pressure inlet passage opening into said rst transverse passageway, a valve in said rst bore normally closingr 01T in one position at least one of the openings into said rst and second passageways and in a second position interconnecting said rst and second passageways; a valve in said second bore at all times closing off direct communication through said bore between said rst and said third passageways and normally closing off said rst and third passageways; 's-aidhead having a pressure and a vacuum passageway leading respectively from said second bore; a Venturi tube in said pressure passageway discharging to the atmosphere, and said vacuum passageway opening into the throat of said tube; said second valve being formed, upon shifting from said normal position, to interconnect respectively said rst passageway and said pressure passageway and simultaneously said third passageway and said vacuum passageway; both of said valves being vertically reciprocable in their respective bores; and spring urged to their said normal positions, said rst valve having a central restricted section of less diameter than end portions of diameters for sliding fits in its bore, the length of the restricted section being suilcient to bridge the openings into the bore of said first and second passageways, when said rst valve is shifted from its normal position; and said second valve having two spaced grooves therearound to afford passages across the second bore respectively for said first to pressure passageways and said third to vacuum passageways when shifted from its normal position.

4. A milk sampler control head for a milk receiving tube comprising a body having two separate valve bores having a common passageway therebetween and in communication with said tube; said body having an air pressure passageway entering from the outside and communicating with both of said bores; a valve member in each of said bores; yielding means normally positioning said valve members to close off communication through said bores between both of said passageways; pressure-actuated vacuum producing means; said body having a passageway from one of said bores connecting with said vacuum producing means normally closed off by the valve member in that bore; said valve members being selectively shiftable against said yielding means to have a valve member in one of said bores interconnect said pressure passageway with said common passageway, and the other valve member being selectively shiftable against its said yielding means with said common passageway; means automatically closing said common passageway upon a predetermined height of milk being had in s-aid tube; and means for interconnecting said tube to atmospheric pressure independently of both of said valve members.

ADAM M. LANG.

REFERENCES CITED rlhe following references are of record in the file of this patent:

UNITED STATES PATENT Number Name Date 2,400,154 Lang May 14, 1946 2,400,651 Marsh May 2l, 1946 2,435,578 FerraeX, Jr. Feb. 10, 1948 

